{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1918-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1918-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1918-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1918-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 MCU, LM3S1918-IBZ50-A2, 32-bit, 50MHz, 256KB Flash, 64Kx8 RAM, 108-LFBGA, -40~85°C.","salesMarkdown":"Texas Instruments has marked the LM3S1918-IBZ50-A2 as obsolete. ## Core and memory headroom Built around the ARM Cortex-M3 core clocked at 50 MHz, this 32-bit single-core MCU delivers 256 KB of on-chip Flash and 64K x 8 of SRAM. The 64K x 8 SRAM handles the runtime heap and stack; a firmware engineer should budget the linker script to avoid fragmentation in the 64 KB window. The part exposes 52 general-purpose I/O lines and a rich peripheral set: I²C, IrDA, Microwire, SPI, SSI, and UART/USART for serial connectivity; an 8-channel 10-bit A/D converter; and on-chip brown-out detect, POR, PWM, and a watchdog timer. ## Package and supply rails Housed in a 108-ball LFBGA (10x10 mm body), this is a fine-pitch BGA that demands a controlled reflow profile — the MSL rating should be confirmed from the TI packaging label before the bake decision.","metaTitle":"Texas Instruments LM3S1918-IBZ50-A2 ARM Cortex-M3 MCU, 50MHz","metaDescription":"Texas Instruments LM3S1918-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50MHz, 256KB Flash, 64Kx8 RAM, -40~85C, 108-BGA. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 1000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"52","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Obsolete","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1918","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"108-BGA (10x10)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$18.7730","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/46084d62ef5295c959adf1f0b652baa1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1918-IBZ50-A2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3S1918-IBZ50-A2?","answer":"The Stellaris family includes many Cortex-M3 variants with similar peripheral sets but different package and memory configurations — a parametric search on Flash size (256 KB), RAM (64K x 8), and package (108-BGA) will surface the nearest active siblings, but pin compatibility must be verified against the target PCB layout."},{"question":"What compliance documentation does Texas Instruments provide for LM3S1918-IBZ50-A2?","answer":"Texas Instruments provides RoHS and REACH compliance documentation for this part as part of its standard product compliance package. The LM3S1918 base product number is covered by TI's general material declarations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1918-IBZ50-A2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S1918-IBZ50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:45:01.502Z","lastPublished":"2026-07-21T02:45:01.502Z","indexable":true}}